[PATCH u-boot 4/4] eth/r8152: support RTL8153B/RTL8154B

Hayes Wang hayeswang at realtek.com
Wed Jun 10 15:12:18 CEST 2020


Marek Vasut [mailto:marex at denx.de]
> Sent: Wednesday, June 10, 2020 8:54 PM
[...]
> >>> +	/* ADC Bias Calibration:
> >>> +	 * read efuse offset 0x7d to get a 17-bit data. Remove the
> dummy/fake
> >>> +	 * bit (bit3) to rebuild the real 16-bit data. Write the data to the
> >>> +	 * ADC ioffset.
> >>> +	 */
> >>> +	ocp_data = r8152_efuse_read(tp, 0x7d);
> >>> +	data = (u16)(((ocp_data & 0x1fff0) >> 1) | (ocp_data & 0x7));
> >>
> >> Are these type casts really needed ?
> >
> > Is there not a warning from u32 to u16?
> 
> There is, but it seems justified to warn about conversion from u32 to
> u16, so maybe that needs to be fixed ?

Excuse me. I don't understand what you mean.
The original is 17-bit data, so I use u32 to store it. And,
the final desired data is 16-bit. That is why
I have to convert it from u32 to u16.

Best Regards,
Hayes


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